Coat another 9×13 glass baking dish with nonstick cooking spray.
In a large bowl, aggressively whisk all of the ingredients together until the mixture is well incorporated, light, airy, and pale in color. Pour into the prepared glass baking dish.
Transfer to the preheated oven and bake, uncovered, for 15 minutes. (This can bake at the same time as the French Toast Casserole because they bake at the same temperature!)
After 15 minutes, stir the eggs, pushing the outside edges in since the edges cook faster. Bake for 10 more minutes or until set (time may vary depending on your oven. Eggs will set quickly toward the end, so keep an eye on them so they don’t overcook and become dry.)
Remove from the heat when the eggs still appear slightly moist, since they will continue to cook out of the oven.
Serve eggs with some freshly cracked pepper and chopped fresh chives.
Allow the French Toast Casserole to cool for at least 10 minutes before serving. Serve French Toast Casserole, Baked Scrambled Eggs, and a side of blueberries and enjoy!